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Taiwan Semiconductor Corporation HER303G A0G
- Part No.:
- HER303G A0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-201AD, Axial
- Datasheet:
-
HER303G A0G.pdf
- Description:
- DIODE GEN PURP 200V 3A DO201AD
- Quantity:
- Payment:
- Shipping:
Inventory:3,124
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Product details
Overview
HER303G A0G from Taiwan Semiconductor is a high-efficiency, single-die ultrafast recovery rectifier in DO-201AD package, rated for 3A average forward current, 200V repetitive peak reverse voltage (VRRM), and 50ns reverse recovery time (trr) at IF = 0.5A. It delivers low forward voltage drop (VF = 1.0V max at 3A, 25°C) and supports freewheeling and DC-DC converter applications in automotive-grade power supplies.
For engineers reviewing the HER303G A0G datasheet, HER303G A0G pinout, HER303G A0G application, or HER303G A0G equivalent, key selection criteria include its 200V VRRM rating, 50ns trr, 125A IFSM surge capability, DO-201AD mechanical compatibility, and AEC-Q101 qualification availability in H-suffix variants.
Technical Context
This ultrafast rectifier uses a planar epitaxial silicon junction structure optimized for reduced switching losses in high-frequency SMPS topologies. Its 50ns reverse recovery time enables operation up to several hundred kHz without excessive ringing or EMI, while the 10°C/W junction-to-lead thermal resistance supports reliable conduction under sustained 3A loads.
The device operates across –55°C to +150°C junction temperature range and features pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-201AD case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - Maximum non-repetitive reverse blocking voltage; defines usable input voltage headroom in flyback or boost converters |
| IF(AV) | 3 A - Continuous average forward current at TC = 75°C; determines heatsinking requirements in 12–48V output stages |
| trr | 50 ns - Measured at IF = 0.5A, IR = 1.0A, Irr = 0.25A; enables efficient operation in 200–500 kHz switching converters |
| VF | 1.0 V max at 3A, 25°C - Low conduction loss improves efficiency in high-duty-cycle rectification paths |
| IFSM | 125 A - Peak non-repetitive surge current (8.3ms half-sine); withstands inrush and fault transients in industrial power supplies |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; allows direct thermal coupling to PCB copper or heatsink via lead frame |
Pinout & Package
DO-201AD axial-leaded package with cathode-indicating band; leads are pure tin-plated, J-STD-002 solderable, and meet JESD201 Class 2 whisker resistance. Weight ≈1.10g. Molding compound complies with UL 94V-0.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry node | Connected to switch node or transformer secondary winding in flyback/forward topologies |
| Cathode (banded end) | Forward current exit node / reverse voltage reference | Connected to output capacitor positive rail; reverse voltage applied between cathode and anode |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast recovery (trr = 50 ns) | Reduces switching losses and EMI generation in high-frequency DC-DC converters operating above 100 kHz |
| Low VF (1.0 V max @ 3A) | Lowers conduction loss by ~15% vs. standard FR diodes, improving thermal margin in compact power designs |
| 125A IFSM rating | Supports robust startup and overload handling in 24–48V industrial SMPS without derating |
| DO-201AD mechanical standardization | Enables drop-in replacement of legacy HER, UF, or MUR series rectifiers in existing through-hole layouts |
| AEC-Q101 qualification option | Validated for automotive power modules requiring stress-tested reliability under temperature cycling and humidity exposure |
Applications
| DC-DC Converter Secondary Rectification | Switch-Mode Power Supply Freewheeling |
|---|---|
Use Scenario: High-efficiency 12V/3A isolated output stage in telecom brick supply using active clamp forward topology. IC Role / Device Role / Timing Role: Ultrafast rectifier conducting during transformer reset phase; replaces slower FR107 with lower trr-induced voltage overshoot. Use Value: 50ns trr minimizes voltage spikes across primary MOSFET, reducing snubber losses and enabling higher switching frequency. | Use Scenario: Freewheeling path in 48V input buck converter powering FPGA core rails. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during high-side switch off-time; critical for maintaining continuous inductor current. Use Value: 1.0V VF reduces conduction loss by 0.3W vs. 1.3V diode at 3A, lowering thermal load on PCB copper area. |
| Automotive Body Control Module (BCM) Power Stage | Industrial AC-DC Adapter Output Stage |
Use Scenario: 24V input rectification in AEC-Q101-compliant BCM power supply with cold-crank tolerance. IC Role / Device Role / Timing Role: Primary output rectifier handling pulsed load currents up to 3A with 125A surge capability during motor actuation. Use Value: 125A IFSM and –55°C to +150°C TJ range ensure reliable operation during engine cranking and under-hood thermal stress. | Use Scenario: 24V/3A output rectification in universal-input 85–264VAC adapter for factory automation sensors. IC Role / Device Role / Timing Role: Final-stage rectifier delivering regulated DC after LLC resonant conversion; requires stable VF and low trr over temperature. Use Value: 10°C/W RθJL enables direct lead-frame thermal transfer to chassis ground, eliminating need for additional thermal vias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UF303G | Same DO-201AD package, identical 200V VRRM and 3A IF, but trr = 35ns (faster), VF = 1.05V max (slightly higher) | Better suited for >500 kHz resonant converters where trr dominates loss; less optimal for cost-sensitive 200 kHz flyback | Select UF303G when minimizing reverse recovery loss is prioritized over absolute VF minimization |
| MUR320 | Same 200V/3A rating, DO-201AD, but trr = 75ns (slower), VF = 0.95V max (lower); not AEC-Q101 qualified | Preferred in cost-driven consumer adapters where EMI filtering budget accommodates longer trr; unsuitable for automotive | Choose MUR320 for non-automotive, thermally constrained designs needing lowest VF, accepting higher trr-related noise |
Compared with UF303G and MUR320, HER303G A0G offers balanced trr/VF trade-off (50ns/1.0V), DO-201AD compatibility, and AEC-Q101-ready variant path-making it optimal for industrial and automotive-adjacent 200–300 kHz SMPS where reliability and thermal stability are prioritized over extreme speed or minimal VF.
Availability
HER303G A0G is available at Aetrix Electronics and suitable for DC-DC converters, switching mode power supplies, and freewheeling applications requiring stable component supply, consistent DO-201AD mechanical fit, and verified 200V/3A ultrafast rectification performance.
Supply support for HER303G A0G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and automotive-qualified components.
The HER30xG series was developed to deliver AEC-Q101-capable, ultrafast recovery rectifiers with optimized trr/VF balance for next-generation 200–500 kHz industrial and automotive power supplies.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for HER303G A0G?
The HER303G A0G has a VRRM rating of 200 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version I2105). This value is fixed per part number suffix '3' in HER303G and defines the highest reverse voltage the device can block repeatedly without breakdown. It is not adjustable or programmable.
Is HER303G A0G RoHS and halogen-free compliant?
Yes, HER303G A0G is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and the pure tin-plated leads satisfy J-STD-002 solderability requirements.
What is the reverse recovery time (trr) specification for HER303G A0G?
The HER303G A0G has a maximum reverse recovery time (trr) of 50 ns, measured under conditions IF = 0.5A, IR = 1.0A, and Irr = 0.25A, per the Electrical Specifications table. This value applies specifically to HER303G and is distinct from higher-voltage variants like HER306G (75 ns).
Does HER303G A0G have AEC-Q101 qualification?
The base HER303G A0G is not AEC-Q101 qualified; however, the datasheet confirms that an AEC-Q101-qualified version is available as HER303GH (tape-and-reel) or HER303GHA0G (ammo box). The 'H' suffix denotes qualification, and HER303G A0G itself carries no automotive qualification unless ordered with that suffix.
What is the thermal resistance from junction to ambient (RθJA) for HER303G A0G?
The HER303G A0G has a typical junction-to-ambient thermal resistance (RθJA) of 35°C/W, as specified in the Thermal Performance table. This value assumes standard JEDEC test conditions (single device on 1-inch² FR-4 board with 2 oz copper). Actual RθJA in end equipment depends on PCB layout, copper area, and airflow.
HER303G A0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-201AD, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 50 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 60pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-201AD
- Operating Temperature - Junction:
- -55°C ~ 150°C
HER303G A0G FAQ
1.How can I place an order for HER303G A0G through Aetrix?
Please submit a Request for Quotation (RFQ) for HER303G A0G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HER303G A0G reliable?
The price and inventory of HER303G A0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HER303G A0G is usually 5 days.
3.What payment methods are accepted for HER303G A0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HER303G A0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HER303G A0G?
HER303G A0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HER303G A0G order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HER303G A0G?
For technical support, including HER303G A0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HER303G A0G requirements.
6.How does Aetrix verify that HER303G A0G is sourced from the original manufacturer or authorized distributors?
All HER303G A0G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HER303G A0G meets industry standards.
7.What is the process for return or replacement of HER303G A0G?
All HER303G A0G units undergo pre-shipment inspection (PSI). If there is an issue with HER303G A0G, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HER303G A0G part is unused and in its original packaging.
Return procedure for HER303G A0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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